Conference Proceeding

Potential application of magnetic field influence on the enhancement of biogranulation technology – a review

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This review presents a compilation of works in microbial granulation technology including microbial immobilization and development of aerobic granules, factors affecting granulation and granule characterization. It also highlights extracellular polymeric substances (EPS) production mechanism and its characteristic composition and the magnetic field (MF) mechanism and its application in wastewater treatment. While the microbial granule plays a vital role in biological wastewater treatment due to obvious advantages over the conventional sludge flock, the integration of sustainable and viable engineering principles and techniques into granulation technology could reduce known start-up time and enhance the efficiency of the treatment system as well. Achieving a short start-up time, which is not detrimental to the microbial community and development of improved aerobic granule in terms of its physical, chemical and biological characteristics, and increasing the efficiency of the treatment system is of paramount importance in granulation technology. A number of selection pressures including hydraulic retention time, hydrodynamic shear force, substrate composition i.e. feed, organic loading and settling time amongst others have been demonstrated to stimulate bacteria to secrete more EPS and subsequently enhance the microbial granule characteristics. It is expedient to mention that the application of magnetic field in the development of aerobic granules may need to be further given attention. Recent studies have explored the potential of magnetic field application in enhancing the activated sludge process and a few works in granulation, and these studies hold that, MF has the capability of enhancing the microbial granule characteristics. This knowledge could be built upon to facilitate a thorough understanding in ascertaining likely MF range and other related factors, which may be optimized during the development of aerobic granule.

Published: 01 August 2017

Copyright:

Copyright: © 2017 Khalida Muda. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.